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STCD23-0 bảng dữ liệu(PDF) 5 Page - STMicroelectronics |
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STCD23-0 bảng dữ liệu(HTML) 5 Page - STMicroelectronics |
5 / 39 page STCD22x0, STCD23x0, STCD24x0 Description Doc ID 15400 Rev 2 5/39 1 Description The STCD22x0, STCD23x0 and STCD24x0 are 2, 3 or 4 output clock distribution circuits which accept external square wave or sine wave signals and output rail-to-rail (0 V to VTCXO) square wave signals. They are used to provide a common frequency clock to multimode mobile RF applications. They can also be used for those baseband peripheral applications in mobile phones such as WLAN, Bluetooth, GPS and DVB-H as the clock reference. The STCD22x0, STCD23x0 and STCD24x0 isolate each device driven by their clock outputs and minimize interference between the devices. Each of the clock buffers can be disabled to lower the power consumption whenever the connected device does not need the clock. The STCD22x0, STCD23x0 and STCD24x0 accept commonly used mobile master clock frequencies ranging from 10 MHz to 52 MHz. The STCD22x0, STCD23x0 and STCD24x0 have a common clock request (open drain output, active low) controlling the external clock source. A 1.8 V, high PSRR LDO is also integrated in the STCD22x0, STCD23x0 and STCD24x0 to supply power to the external clock source (for example, TCXO). STMicroelectronics offers different versions for the enable polarities. The STCD22x0, STCD23x0 and STCD24x0 are available in, respectively, 1.2 mm x 1.6 mm (12-bump), 1.2 mm x 1.6 mm (12-bump) and 1.6 mm x 1.6 mm (16-bump) chip scale packages and can be operated with a battery supply voltage ranging from 2.5 V to 5.1 V. The operating temperature is –20 to +85 °C. |
Số phần tương tự - STCD23-0 |
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Mô tả tương tự - STCD23-0 |
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